Nyob rau hauv cov txheej txheem ntawm polypropylene thermoforming, lub uniformity ntawm cov khoom thickness ncaj qha cuam tshuam cov khoom siv, zoo li zoo thiab compatibility ntawm cov khoom tiav. Vim tias cov thermal conductivity tsawg thiab cov ntaub ntawv crystallinity polypropylene tseem ceeb, qhov tsis xws luag xws li qhov tsis sib xws hauv zos thickness thiab wrinkling ntawm npoo yuav tshwm sim thaum thermal molding. Nyob rau hauv daim ntawv no, cov khoom thickness tswj lub tswv yim nyob rau hauv PP thermoforming tshuab ntau lawm systematically expounded los ntawm peb qhov ntev: txheej txheem parameter optimization, pwm tsim kev txhim kho thiab txawj tej yam ntxiv khoom.
Precise Control of Process Parameters: Temperature-Presure-Time Coordinated Optimization
1.Heating Temperature Gradient Control
PP thermoforming kub ntau li ntawm 160 mus rau 200 degrees Celsius thiab yuav tsum tau dynamic hloov raws li qhov complexity ntawm cov khoom qauv. Rau cov thawv ntim ntiav, ob- cov cua kub ib sab yog ua tiav los ntawm cov cua sov infrared uas siv qhov qis- kub yaj theem nqus ntawm 165-175℃kom tsis txhob muaj cua sov hauv zos thiab cov khoom degradation. Piv txwv li, lub sij hawm cua sov ntawm 2 hli slab yuav tsum tau txwv rau 90 vib nas this. Rau txhua txhua 0.5 hli nce nyob rau hauv thickness, lub cua sov lub sij hawm ncua los ntawm 15 vib nas this, thaum nto gloss pom-cim gloss qhia tias txaus cua sov; localized whitening yuav tsum tau cua sov ntxiv; thiab
Rau cov khoom lag luam sib sib zog nqus, cov khoom siv kub kub yog qhov yuav tsum tau ua hauv lub xeev siab ntawm 180-190℃C. Compressed cua yog siv los nias daim hlau rau hauv pwm. Huab cua siab yuav tsum tau tswj nyob rau hauv theem: 0.3-0.6MPa rau cov khoom siv dav dav thiab 0.8-1.2MPa rau cov khoom sib sib zog nqus chamber, kom ntseeg tau tias cov khoom ntim tag nrho cov ces kaum ntawm qhov tuag.
2.Cooling thiab Shaping Sijhawm Matching
Lub sijhawm txias yog 1.5 npaug ntev dua lub sijhawm cua sov, thiab rau cov khoom tuab -cov khoom siv phab ntsa, lub sijhawm txias yuav tsum tau muab ob npaug rau. Siv kev sib xyaw ua ke ntawm huab cua thiab dej txias: ua ntej, txias cov khoom kom qis dua 80 degrees Celsius kom tsis txhob deformation, thiab tom qab ntawd tsuag dej cov khoom kom qis dua 40 degrees Celsius. Piv txwv li, 3 hli tuab cov khoom yuav tsum tau 270 vib nas this kom txias. Nyob rau lub sijhawm no, kev ua kom txias txias yog ua tiav los ntawm cov cua txias sab hauv (8-12mm inch thiab 30-50mm spaced sib nrug) los tiv thaiv thickness deviations vim shrinkage sib txawv.
3. Lub sij hawm rhuav tshem thiab txoj kev
Kev rhuav tshem sai dhau tuaj yeem ua rau cov khoom tawg, thiab kev tshem tawm lig dhau lawm tuaj yeem ua rau nws nyuaj dua. Thaum siv lub ejector, nws raug nquahu kom ejection ceev tswj ntawm 5-10mm / s. Rau cov pwm nyuaj, silicon-raws li tus neeg sawv cev tso tawm uas ua tau raws li FDA cov qauv tuaj yeem txau. Xyuas cov khoom tuab tam sim ntawd tom qab tshem tawm thiab siv calipers los ntsuas qhov tseem ceeb xws li cov npoo, cov ces kaum thiab hauv qab. thickness kam rau ua yuav tsum tsis pub dhau ± 0.1 hli.
Pwm Tsim Innovation: Cov qauv kev ua kom zoo dua qub thiab cov khoom siv kho dua tshiab
1. Txhim kho Mould Venting System
Nyob rau hauv cov txheej txheem ntawm molding cov ntaub ntawv polypropylene, lub zos dilution yog yooj yim tshwm sim vim tsis zoo venting. pwm vent qhov yuav tsum yog ib txoj kab uas hla ntawm 0.1-0.3mm thiab vents yuav tsum yog ntawm ib tug tob ntawm 0.05-0.1mm los xyuas kom meej du paug ntawm gases. Piv txwv li, nyob rau hauv kev tsim khoom ntawm cov kab noj hniav sib sib zog nqus ntim, annular tso qhov sib nrug ntawm 50 hli tuaj yeem muab ntxiv rau ntawm phab ntsa ntawm cov pwm kom tsis txhob muaj cua npuas los ntawm kev ua kom tuab tsis sib xws.
2. Ua ntej-stretching thiab Auxiliary Moulding Technology
Rau cov khoom uas muaj qhov sib piv siab (xws li khob dej haus), kev siv tshuab ua kom muaj zog yog siv los pab molding: cov ntawv preheated yog nias rau saum npoo ntawm leej niam tuag thiab kos los ntawm lub plunger 70% -90% ntawm pwm kab noj hniav ntim). Nyob rau tib lub sijhawm, compressed cua yog txhaj los ntawm lub qhov cua ntawm lub plunger los xyuas kom meej tias cov khoom yog uniformly txuas mus rau qhov tuag. Cov txheej txheem tuaj yeem txhim kho cov khoom hauv qab thickness uniformity los ntawm 30% thiab txo tus nqi crease kom qis dua 5%.
3. Pwm Khoom thiab Deg kev kho mob
High hardness tuag steel (xws li H13) nrog nyuaj chromium los yog nitriding (hardness txog HV900-1000) yog siv los txo qhov kev tsis sib haum xeeb vim hnav. Rau cov khoom pob tshab polypropylene, pwm kab noj hniav yuav tsum tau polished tsawg dua Ra0.8 micron kom tsis txhob muaj qhov khawb ntawm qhov chaw uas ua rau muaj kev ntxhov siab thiab kev hloov pauv hauv cov tuab hauv zos.
Cov Khoom Txawj Ntse Hloov Kho: Cov ntaub ntawv-tsav, kaw- voj tswj
1. Tiag -lub sij hawm saib xyuas thiab Cov Lus Qhia
Cov tsis tseem ceeb (kub kub nkhaus, molding siab, lub sij hawm txias, thiab lwm yam) tau sau siv MES system thiab saib xyuas thoob plaws hauv lub txheej txheem los ntawm ib tug network ntawm sensors. Piv txwv li, infrared kub sensor tau nruab rau hauv thaj chaw cua sov kom hloov kho cua sov lub zog thaum lub phaj kub sib txawv tshaj ± 5 degree, thiab lub siab sensor tau muab tso rau hauv qhov tuag kom muab qhov tseeb - lub sij hawm tawm tswv yim ntawm molding siab thiab xyuas kom meej tias cov kab noj hniav sib sib zog nqus txaus.
2. Tsis siv neeg pub noj thiab tshem tawm qhov system
Ib tug rau - qag neeg hlau caj npab yog siv es tsis txhob ntawm phau ntawv ua haujlwm, pub ceev tuaj yeem ncav cuag 3 m / min, qhov chaw qhov tseeb ± 0.05mm, zam qhov kev hloov ntawm cov phaj los ntawm phau ntawv clamping. Nyob rau hauv tus txheej txheem ntawm disassembly, tus neeg hlau caj npab yog peb lub sij hawm sai tshaj li kev khiav hauj lwm phau ntawv, thiab tus pass tus nqi nce mus rau 99.5%, zoo heev txo thickness anomalies los ntawm disassembly puas.
3. Digital Twin Technology
Lub virtual simulation platform rau molding tsis xws luag raws li CAE tsom xam yog qhia. Piv txwv li, thaum tsim cov khoom siv hauv tsheb tshiab, cov khoom siv phab ntsa thickness sib txawv tau txo los ntawm ± 0.2mm mus rau ± 0.08mm los ntawm kev simulating cov ntaub ntawv ntws raws li cov txheej txheem sib txawv thiab optimizing pwm ntws channel tsim, uas ua rau 40% txo nyob rau hauv lub sij hawm kuaj pwm.
Xaus:
Kev tswj xyuas cov khoom tuab hauv PP thermoforming tshuab ntau lawm yuav tsum muaj kev sib koom tes los ntawm peb yam: txheej txheem, pwm thiab khoom siv. Los ntawm kev tswj cov kub thiab txias tsis zoo, optimizing tuag qhov cua thiab pretensioning qauv, thiab deploying ntse xyuas system, lub uniformity ntawm cov khoom thickness yuav ho txhim kho. Nrog rau qhov nrov ntawm cov thev naus laus zis tshiab xws li digital ntxaib thiab multilayer coextruding phaj, PP thermoforming thev naus laus zis yuav txhim kho nyob rau hauv cov kev taw qhia ntawm qhov tseeb thiab kev ua haujlwm zoo, muab cov kev daws teeb meem zoo dua rau kev ntim khoom noj, tsheb qhov chaw thiab lwm yam.
